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UV-cured masking material for aluminum and titanium
I'm looking to find a masking material that is UV-curable (or is otherwise curable in a short amount of time) that I can use on aluminum and titanium parts. It needs to be able to withstand etching baths, deoxidizing baths, and the anodizing, chromating and passivating processes. Thanks in advance!Chris Bruce
metal finish in aerospace industry - Boulder, Colorado, USA
One of the oldest systems is based on poly vinyl alcohol and is polymerised by the presence of ammonium dichromate. It can be "exposed" to UV light and give you preferential polymerisation, so the photoresistlayer can be patterned. It is dyed in tannic acid and developed in water.
R&D practical scientist
Chesham, Bucks, UK